WO2010043066A1 - Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau - Google Patents

Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau Download PDF

Info

Publication number
WO2010043066A1
WO2010043066A1 PCT/CN2008/001721 CN2008001721W WO2010043066A1 WO 2010043066 A1 WO2010043066 A1 WO 2010043066A1 CN 2008001721 W CN2008001721 W CN 2008001721W WO 2010043066 A1 WO2010043066 A1 WO 2010043066A1
Authority
WO
WIPO (PCT)
Prior art keywords
message
mobile agent
mobile
messages
network
Prior art date
Application number
PCT/CN2008/001721
Other languages
English (en)
Chinese (zh)
Other versions
WO2010043066A8 (fr
Inventor
姚春燕
郑军
宾樊翔
Original Assignee
上海贝尔股份有限公司
阿尔卡特朗讯
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯 filed Critical 上海贝尔股份有限公司
Priority to CN200880130523.0A priority Critical patent/CN102106131B/zh
Priority to PCT/CN2008/001721 priority patent/WO2010043066A1/fr
Publication of WO2010043066A1 publication Critical patent/WO2010043066A1/fr
Publication of WO2010043066A8 publication Critical patent/WO2010043066A8/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/53—Network services using third party service providers

Definitions

  • the present invention relates to communication networks, and more particularly to a method and apparatus for assisting control of mobile agent announcement messages in a communication network. Background technique
  • Mobile IPv4 is a wireless extension of existing IPv4 networks.
  • MIPv4 a proxy discovery mechanism is defined, which can be used by a foreign agent care-of-address (FACoA) provided by a mobile node (MN, Foreign Agent) to complete necessary service switching.
  • FCoA foreign agent care-of-address
  • MN mobile node
  • a mobile node can discover through the link layer mechanism that the subnet connected to the mobile node changes. Specifically, the base station of the DSLAM or Wifi broadcasts a layer 2 MAC frame to announce the identity of the link. When the mobile node moves to the DSLAM or Wifi jurisdiction, the broadcast MAC frame is received, therefore, The mobile node can know which link it is connected to based on the network identifier in the payload of the MAC frame. Since the link layer mechanism is not related to the present invention, it will not be described in detail herein.
  • the mobile node When the payload of the MAC frame does not contain the network identifier, the mobile node must complete the proxy discovery through the proxy advertisement (AA, Agent Advertisement) and the proxy request (AS, Agent Solicitation).
  • AA Agent Advertisement
  • AS Agent Solicitation
  • mobile agents including home agents and foreign agents
  • proxy announcements typically need to periodically broadcast "proxy announcements" within their respective subnets to advertise the services they provide on the link.
  • a mobile node may obtain proxy advertisement messages in at least two ways: i) when a mobile node newly enters a network, it waits for a period of time, receives an agent advertisement periodically sent by the mobile agent of the network; or ii) moves The node sends a proxy request message to the mobile agent, and actively requests the proxy advertisement message, when multiple mobile agents receive the proxy request message, According to a certain strategy, one of the mobile agents is selected to send an agent announcement message as a response.
  • the mobile node For the way ii) to obtain the proxy announcement message by sending the proxy request message, since a mobile node obtains the proxy announcement message (solicited AA) by sending the proxy request message, authentication and interaction of the proxy request message are required, thereby bringing Long delay time, therefore, IP layer switching cannot be completed in time, and Wifi supports hard handover at the physical layer, and a long delay time may even cause service interruption. Therefore, in order to reduce the delay of the IP layer handover, the mobile node preferably acquires an unsolicited AA message immediately after moving to a network by way i) to complete the mobile discovery, in order to facilitate the mobile node to quickly It is detected that the movement occurs, and the sending frequency interval of the proxy announcement message cannot be too large.
  • MIPv4 is deployed in an early stage of the access network, which includes fixed access networks, such as DSL access networks and Ethernet access networks, and may also include radio access networks, such as Wifi base station access, network models.
  • the aggregation device such as DSLAM in DSL network, switch in Ethernet
  • the edge router is connected. Therefore, the mobile agent (mobile agent including home agent and foreign agent) is usually deployed in the edge router.
  • an edge router usually has 2000-5000 user terminals.
  • the edge router periodically multicasts/broadcasts the advertisement announcement message to the user terminal under its jurisdiction, and the multicast/broadcast domain is large, and the inter-stage multi-level switch and the DSLAM are intermittently broadcast/multicast by the edge router. This will cause the spread of these messages on the Ethernet-based Metropolitan Access Network (EMAN), which wastes a lot of bandwidth resources of the network. At the same time, controlling the sending of these proxy request messages will also occupy the CPU of the edge router.
  • EMAN Ethernet-based Metropolitan Access Network
  • IPv6 IPv6 address space
  • http://www.potaroo.net/tools/ipv4/ predicts that IPv4 addresses will be exhausted by 2012. Therefore, adopting IPv6 will be imperative.
  • the number of mobile users has exceeded the number of fixed users. Therefore, deploying mobile IPv6 in DSL networks is also a trend in IP networks.
  • RA Router Advertisement
  • the mobile node must quickly learn that it is connected to the new link to ensure that the mobile node can obtain a new Care-of-Address and send a binding update to the home agent to register the new care-of address to be new.
  • the care-of address is bound to the home agent and the binding update is notified to the corresponding node that is needed.
  • one approach is to increase the frequency of unsolicited RA announcements.
  • MIPv6 is deployed in the early stages of a DSL network. Similar to MIPv4, an economical approach is to deploy home agents and foreign agents in edge routers. Similar to MIPv4, the router advertisement message is multicast/broadcast periodically to the user terminal under its jurisdiction, and the multicast/broadcast domain is large, and the inter-stage multi-level switch and DSLAM are frequently broadcasted by the edge router/ Multicasting these messages will cause these messages to spread in the EMAN (Ethernet-based Metropolitan Access Network). In MIPv6, when the minimum interval and delay are used, the unsolicited multicast router advertisement message The average interval is 50ms. Therefore, it wastes a lot of bandwidth resources of the network and reduces the transmission quality of other services transmitted on the metropolitan area network. Simultaneous control of the sending of these proxy request messages also occupies the CPU of the edge router. Summary of the invention
  • the present invention sets a control device in a network device close to a user terminal, such as an access device (eg, a DSLAM), which acquires one or more of one or more edge routers (hereinafter referred to as upper-level network management devices)
  • the mobile agent advertisement message provides the mobile agent advertisement information corresponding to the at least one of the one or more mobile agent announcement messages to one or more mobile nodes under the jurisdiction of the network device when the first predetermined condition is met. Further, when the second predetermined condition is satisfied, the control device also controls the higher-level network management device to transmit one or more mobile agent advertisement request messages for requesting the mobile agent advertisement message.
  • a method for assisting control of a mobile agent advertisement message in a network device of a communication network comprising the steps of: Obtaining one or more mobile agent advertisement messages from one or more upper-level network management devices of the network device; determining whether the first predetermined condition is satisfied; when the first predetermined condition is satisfied, the one or more The mobile agent announcement information corresponding to at least one of the mobile agent announcement messages is provided to one or more mobile nodes under the jurisdiction of the network device.
  • a control device for assisting control of a mobile agent advertisement message in a network device of a communication network includes: an acquisition device, configured to acquire, from the network device One or more mobile agent announcement messages of the one or more upper-level network management devices; a first determining means, configured to determine whether the first predetermined condition is satisfied; and means for providing, when the first predetermined condition is satisfied, The mobile agent announcement information corresponding to the at least one of the one or more mobile agent announcement messages is provided to one or more mobile nodes under the jurisdiction of the network device.
  • the burden on the upper-level network management device, such as the edge router, is reduced, and the mobile agent advertisement message spreading in the network is also reduced, and the CPU occupation of the edge router is reduced.
  • FIG. 1 is a schematic diagram of a network topology of an IP network according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a system method for assisting control of a mobile agent announcement message in a DSLAM in accordance with an embodiment of the present invention
  • FIG. 3 is a block diagram of an apparatus for assisting in controlling a mobile agent announcement message in a DSLAM in accordance with an embodiment of the present invention.
  • the present invention is implemented in an access device, for example, a digital subscriber loop access multiplexer
  • a control device/module provided by the second aspect of the invention is introduced in a (DSLAM), switch or mini-router to implement the method provided by the first aspect of the invention.
  • FIG. 1 shows a schematic diagram of a network topology of an IP network in accordance with an embodiment of the present invention.
  • the network shown in FIG. 1 includes a plurality of user terminals la, lb, lc, and Id, wherein the user terminals lc and Id are connected to the DSLAM 2a through the client devices 5c, 5d, respectively, and the user terminal 1b is connected to the user terminal 5b.
  • the DSLAM 2d is connected.
  • the user terminal 1a When the user terminal 1a is in the subnet A, it is connected to the DSLAM 2b through the client device 5a.
  • the user terminal 1a moves to another network (subnet B), it can be connected to the DSLAM 2C through the client device 5e.
  • the customer-premises equipment may be, for example, a DSL modem or a cable modem.
  • DSLAM2a, 2b is connected to the edge router 3a through the switch 4a, and finally accesses the Service Provider Backbone 7, DSLAM2c, 2d through the switch 4b, and then accesses the edge router 3b or the broadband access server (BRAS, Broadband Remote) Access Server 10, and finally access to the service provider backbone network 7, in addition, through various DSLAMs, switches, edge routers or BRAS, user terminals can also eventually connect with other access networks, other service provider backbones or the Internet. Not shown in the figure.
  • the service provider backbone network 7 can also be connected to the Internet through the Internet gateway 8, and connected to the PSTN network through the voice gateway 9, and the DHCPv4 server can also be deployed in the service provider backbone network.
  • the edge router 3a From the edge router 3a to the DSLAM 2a, 2b, an Ethernet-based Metropolitan Area Network 6a is formed, and the edge metropolitan area network 3b is formed from the edge router 3b and the BRASIO to the DSLAM 2c, 2d.
  • FIG. 1 shows only a part of the network nodes.
  • the user terminal can connect to the edge router or the broadband access server through the small router and the switch, or the user terminal can connect to the edge router or the broadband access server through the user-side switch, or the user terminal can pass A wireless aggregation device such as a wifi base station is connected to an edge router or a broadband access server. Therefore, the control device provided by the second aspect of the present invention may also be located in the above-mentioned small router or user side switch or wifi base station.
  • DSLAM access device
  • the user terminals la, lb, lc, and Id can be completely replaced by other mobile nodes, such as a mobile router.
  • the mobile node is used as an example for the user terminals la, lb, lc, and Id. Description.
  • FIG. 1 is a flow diagram of a system method for assisting in controlling mobile agent announcement messages in a DSLAM 2a in accordance with an embodiment of the present invention.
  • the method used to assist in controlling the mobile agent announcement message can be done by the Mobile Agent Discovery Agent (MADP) module located in DSLAM2a, or by other modules located in DSLAM2a.
  • MADP Mobile Agent Discovery Agent
  • the mobile agent advertisement message includes an agent advertisement (AA) message, and the user equipment obtains an AA message by sending an agent solicitation (AS) message; in the IPv6 network, the mobile agent announcement message includes a router.
  • a router advertisement is used by the user equipment to obtain an RA message by sending a router solicitation (RS) message.
  • the DSLAM 2a acquires the AA message from the edge router 3a.
  • the DSLAM 2a can receive the AA message from the edge router 3a, or the AA message pre-stored with the edge router 3a in the DSLAM 2a.
  • the DSLAM 2a can save the AA message it receives from the edge router 3a locally.
  • the AA message includes an ICMP 5 Router Advertisement field, which defines an ICMP Code (ICMP Code), a lifetime (Lifetime), a router address (Router Address (es)), and a router.
  • ICMP Code ICMP Code
  • Lifetime Lifetime
  • es Router Address
  • the number of addresses (Num Addrs). See Section 2.1 of IP Mobility Support for IPv4, http://www.ietf.org/rfc/rfc3344.txt for specific specifications.
  • the AA message also includes a Mobility Agent lo Advertisement Extension Field, which defines a Type, a Length, a Sequence Number, a Registration Lifetime, and an "R”. Bit, "B” bit, "H” bit, “F” bit, “M” bit, “G” bit, “r” bit, “T” bit, “Reserved” field, care-of address ( Care -of- Addresses ). See Section 2.1.1 of IP Mobility Support for IPv4, 15 http: ⁇ www.ietf.org/rfc/rfc3344.txt for specific specifications.
  • the AA message also includes a prefix length extension (Prefix-Lengths Extension), including type (Type), length (Length), and prefix length (Prefix-Length), where the length is the number of addresses of the ICMP route advertisement part (Num Addrs ) domain, each prefix in the prefix length corresponds to each router address in the ICMP router advertisement domain, and the subnet prefix can be obtained by performing an AND operation with each prefix and the corresponding router address.
  • Prefix-Lengths Extension including type (Type), length (Length), and prefix length (Prefix-Length)
  • the length is the number of addresses of the ICMP route advertisement part (Num Addrs ) domain
  • each prefix in the prefix length corresponds to each router address in the ICMP router advertisement domain
  • the subnet prefix can be obtained by performing an AND operation with each prefix and the corresponding router address.
  • the AA message sent by the edge router 3a to the DSLAM 2a includes a prefix length extension
  • the AA message sent by the DSLAM 2a to the lower-level network node must also include the prefix length extension; 25 if the edge router 3a sends the AA message to the DSLAM 2a.
  • the prefix length extension is not included, and the prefix length extension is not included in the AA message sent by the B's DSLAM2a to the subordinate network node.
  • the AA message also includes the upper management device of the DSLAM 2a, that is, the IP address and the link layer address of the edge router 3a, that is, the source address of the AA message.
  • the source IP address of the AA message is the IP address 200.15.15.1 of the edge router 3a
  • the source link layer address is the MAC layer address corresponding to the IP address 200.15.15.1, for example, 08:00:20:0A:8C:6D.
  • the destination IP address is the multicast address 224.0.0.1 or the "restricted broadcast" address 255.255.255.255 of "all systems on this link”.
  • the destination link layer address is the MAC address corresponding to the multicast address 224.0.0.1 of the "All systems on the link” or the MAC address corresponding to the "Bound Broadcast” address 255.255.255.255.
  • the destination address of the AA message is the source address of the AS message sent by the user terminal Id.
  • the user terminal ID is IP address: For example, 200.15.15.8.
  • DSLAM2a fills the destination IP address with the multicast address of "All systems on this link" 224.0.0.1 or "Restricted broadcast" address 255.255.255.255»
  • step S11 the DSLAM 2a judges whether or not the first predetermined condition is satisfied.
  • step S12 when the first predetermined condition is met, the AA information corresponding to the AA message is provided to one or more user terminals under the jurisdiction of the DSLAM 2a.
  • Steps S11 and S12 are specifically described below for several situations included in the first predetermined condition:
  • the user terminal lc is taken as an example for description.
  • the user terminal lc is located in the link to which the DSLAM 2a is connected, and the user terminal lc has completed registration with the edge router 3a, and therefore, the AA message of the edge router 3a is stored in the DSLAM 2a.
  • the user terminal lc needs to periodically acquire the AA message of the edge router 3a from the DSLAM 2a in order to know whether it is still connected to the link managed by the edge router 3a (ie, it has not moved to the external network). Therefore, the DSLAM 2a periodically transmits the information corresponding to the AA message stored in the DSLAM 2a to the user terminal lc.
  • the transmission of information corresponding to periodically transmitting each AA message is maintained in the DSLAM 2a.
  • Schedule a time period timer For example, the DSLAM 2a can set the predetermined time period to 50 ms.
  • the DSLAM 2a clears the timer and starts timing.
  • the step is In S11, the DSLAM 2a determines that the first predetermined condition is satisfied.
  • DSLAM2a resets the timer to 50ms from the last time the information corresponding to the AA message is sent to the user terminal lc, and starts counting down.
  • the DSLAM2a determines that the first predetermined condition is met. It should be understood by those skilled in the art that the foregoing predetermined time period of 50 ms is only an example, and the network operator or the network management system may select other predetermined time periods according to actual conditions.
  • step S12 the DSLAM 2a transmits the AA information corresponding to the periodically transmitted AA message to the user terminal lc.
  • the AA information corresponding to the AA message includes: an Internet Control Message Protocol Router Advertisement Domain and a Mobile Agent Advertisement Extension Domain. If the AA message acquired by the DSLAM 2a includes the prefix length extension in step S10, the DSLAM2a period is performed in step S12. The AA information corresponding to the sent AA message also includes the prefix length extension; if the AA message acquired by the DSLAM 2a does not include the prefix length extension in step S10, the AA message periodically sent by the DSLAM 2a in step S12 corresponds to AA information also does not include prefix length extensions.
  • the AA information corresponding to the AA message further includes:
  • DSLAM2a fills in the destination IP address of the AA information into the multicast address of "All systems on this link" 224.0.0.1 or "Restricted broadcast" address 255.255.255.255»
  • Source IP address Since DSLAM2a works in bridge mode, it does not have an IP address for data forwarding. Therefore, DSLAM2a does not modify the source IP address of the AA message, and is still the IP address of the edge router 3a that sends the AA message to DSLAM2a. That is 200.15.15.1.
  • Destination link layer address The MAC address corresponding to the multicast address 224.0.0.1 of "All systems on this link", or the MAC address corresponding to the "Restricted Broadcast" address 255.255.255.255.
  • Source link layer address If the DSLAM2a is running the Address Resolution Protocol proxy (ARP) Proxy), DSLAM2a modifies the source link layer address to the network side MAC address of DSLAM2a. If the address resolution protocol proxy (ARP Proxy) is not running on DSLAM2a, DSLAM2a fills the source link layer address with the same metropolitan area as DSLAM2a.
  • the MAC address of the mobile agent of the Ethernet in this embodiment, is the address of the edge router 3a, that is, the MAC address corresponding to 200.15.15.1.
  • DSLAM2a also needs to set the lifetime of the AA information sent to the user terminal lc to
  • step S12 the DSLAM 2a further needs to determine whether the acquired AA message is marked with a virtual local area network (VLAN) identifier. If the AA message is marked with a VLAN identifier, the DSLAM2a will generate the AA information. It is sent to multiple user terminals corresponding to the virtual network divided by the VLAN. Otherwise, the DSLAM2a sends the generated AA message to all user terminals of the physical link or logical link through its DSL side port, including User terminal lc.
  • VLAN virtual local area network
  • the user terminal Id is taken as an example for description. After the lifetime of the last AA message obtained by the user terminal Id expires, after the AA message from the same edge router is not received, the user terminal Id needs to send an AS message to request the AA message. In this embodiment, when the user terminal Id moves from another subnet (not shown) to the subnet under the DSLAM 2a, it loses contact with the other subnet, and therefore, the user terminal Id sends an AS message. And because the user terminal Id does not know the unicast address of the mobile agent on the subnet link to which it is moving, the destination IP address of the AS message sent is the multicast directed to all mobile agents on the subnet link.
  • the address, that is, 224.0.0.11, the destination link layer address is the MAC address corresponding to the multicast address 224.0.0.11.
  • the source IP address of the AS message sent by the user terminal is the IP address of the user terminal Id. For example, 200.15.15.8sammlung
  • the source link layer address is the MAC address of the port of the user terminal Id that sent the message.
  • the user terminal Id dynamically obtains the IP address, it is not yet When obtaining an IP address, you need to send an AS message. Because the source IP address of the AS message cannot be empty, the user terminal Id fills in the source IP address in the AS message with 0.0.0.0. If the DSLAM 2a receives the AS message from the user terminal Id, the judgment result is that the first predetermined condition is satisfied.
  • the description of taking the AS message from the user terminal Id by the DSLAM 2a as an example is as described above.
  • the DSLAM2a cascades a plurality of user terminals below
  • the DSLAM 2a receives an AS message from any one of the plurality of user terminals under its cascade, the DSLAM 2a judges that the first reservation is satisfied. condition.
  • step S12 the DSLAM 2a sends the AA information corresponding to its pre-stored AA message to the user terminal ld requesting the AA message.
  • the AA information corresponding to the AA message includes: an Internet Control Message Protocol Router Advertisement Domain and a Mobile Agent Advertisement Extension Domain. If the AA message acquired by the DSLAM 2a includes the prefix length extension in step S10, the DSLAM2a sends in step S12. The AA information corresponding to the AA message also includes the prefix length extension; if the AA message retrieved by the DSLAM 2a does not include the prefix length extension in step S10, then in step S12, the AA information corresponding to the AA message sent by the DSLAM 2a is also Does not include prefix length extensions.
  • the AA information corresponding to the AA message further includes:
  • Destination IP address The source address of the AS message sent by the user terminal Id. In this embodiment, it is the IP address of the user terminal Id: for example, 200.15.15.8.
  • DSLAM2a fills in the destination IP address as "all systems on the link, multicast address 224.0.0.1 or "restricted broadcast, address 255.255.255.255.”
  • Source IP address Since DSLAM2a works in bridge mode, it does not have an IP address for data forwarding. Therefore, DSLAM2a does not modify the source IP address of the AA message, and is still the IP address of the edge router 3a that sends the AA message to DSLAM2a. That is 200.15.15.1.
  • Destination link layer address When the source IP address of the AS message is known, DSLAM2a fills the destination link layer address with the MAC address corresponding to the source IP address, that is, the MAC address corresponding to 200.15.15.8. When the source IP address of the AS message is 0.0.0.0, the DSLAM2a fills in the destination link layer address with the MAC address corresponding to the multicast address 224.0.0.1 of the "All systems on the link", or the "restricted broadcast" address. MAC address corresponding to 255.255.255.255.
  • Source link layer address If the address resolution protocol proxy (ARP address) is running on DSLAM2a, if the address resolution protocol proxy (ARP Proxy) is not running on DSLAM2a, DSLAM2a fills the source link layer address with the same metropolitan area as DSLAM2a.
  • the MAC address of the mobile agent of the network in this embodiment, is the address of the edge router 3a, that is, 200.15.15.1.
  • Case 3 includes at least the following three specific implementations:
  • DSLAM2a initially does not contain any AA messages, and then DSLAM2a is initially configured with AA messages.
  • the step of the configuration may be manually configured.
  • the network management device configures the AA message in the edge router 3a and the DSLAM 2a at the same time, or the DSLAM 2a obtains the AA message sent from the edge router 3a.
  • the DSLAM2a determines. The first predetermined condition is met.
  • the ALAM message from the edge router 3a (hereinafter referred to as a pre-stored AA message) is pre-stored in the DSLAM 2a, and the DSLAM 2a receives the AA message from the edge router 3a (hereinafter referred to as the current AA message). At this time, the DSLAM 2a detects whether the received current AA message is the same as the pre-stored AA message pre-stored in the DSLAM 2a. If the current AA message is different from the pre-stored AA message, the DSLAM 2a determines to satisfy the first predetermined condition in step S1 1.
  • the AA message from the edge router 3a is pre-stored in the DSLAM2a, and the AA message pre-stored by the DSLAM2a is lost in whole or in part, for example, due to a failure or power failure, when the DSLAM2a updates its pre-stored content, that is, When the fault is recovered, or is re-powered to restore the pre-stored AA message in the DSLAM 2a, in step S11, the DSLAM 2a judges that the first predetermined condition is satisfied.
  • step S12 the DSLAM 2a transmits the AA information corresponding to the updated AA message to the user terminals lc and/or ld.
  • the content and the object to be transmitted of the AA message are similar to the step S12 of the first case, and are not described herein.
  • the DSLAM2a first updates the pre-stored AA message in the network device with the received current AA message, and then sends the updated pre-stored AA message to the user terminal lc and/or Id (including the connection under the DSLAM2a). All network nodes), In a variant embodiment, the DSLAM 2a may first send the currently received AA message to the user terminal lc and/or Id, and then update the pre-stored AA message in the network device with the currently received AA message.
  • TTL Time To Live
  • the DSLAM 2a when the second predetermined condition is met, the DSLAM 2a needs to perform the step SA to send a second mobile agent request message, i.e. the AS information corresponding to the AS message, to the edge router 3a.
  • a second mobile agent request message i.e. the AS information corresponding to the AS message
  • the second predetermined condition includes the following situations:
  • DSLAM2a does not contain any mobile agent announcement messages. For example, when DSLAM2a is initially started, or DSLAM2a fails, all pre-stored AA messages are lost after power-on.
  • the DSLAM2a pre-stores the AA message from the edge router 3a, and the life cycle corresponding to the AA message has expired, or the life cycle of one of the fields is expired.
  • the source IP address included in the AS information sent by the DSLAM 2a to the edge router 3a is the IP of the user terminal Id. Address, ie 200.15.15.8; if the DSLAM 2a does not receive an AS message from any of its user terminals under its jurisdiction, or receives an AS message from a user terminal under its jurisdiction, but the IP address of the user terminal Unknown, because DSLAM2a is working in bridge mode and does not process the IP address of the data service, DSLAM2a fills in the source IP address of the AS information to be sent to edge router 3a to 0.0.0.0.
  • DSLAM2a fills in the destination IP address as "the multicast address of all mobile agents on the link, 224.0.0.11.
  • DSLAM 2a repeats step S10 to receive the AA message from edge router 3a as a response to the AS message sent by DSLAM 2a.
  • DSLAM2a In addition, in order to prevent broadcast storms caused by loops, when configuring DSLAM2a, DSLAM2a needs to know which ports are uplink ports and which ports are downlink ports. In The uplink port, corresponding to the network side, can only receive AA messages, but cannot receive AS messages. Therefore, DSLAM2a discards AS messages from the uplink port. On the downlink port, corresponding to the user side, it can only receive AS messages and cannot receive AA messages. Therefore, DSLAM2a discards AA messages from the downlink port.
  • the DSLAM 2a is connected to the edge router 3a through the switch 4a, that is, only one upper-level network management device, that is, the edge router 3a, is cascaded on the DSLAM 2a.
  • the DSLAM can be connected to multiple edge routers or broadband access servers via switches. Taking DSLAM2C as an example, DSLAM2C is connected to edge router 3b and broadband access server 10 through switch 4b.
  • step S10 the DSLAM 2C acquires respective AA messages from the edge router 3b and the broadband access server 10, respectively.
  • the DSLAM 2c in addition to determining whether one of the cases one, two, and three is satisfied, the DSLAM 2c needs to further determine whether the predetermined selection condition is satisfied.
  • the booking conditions include:
  • the AA message corresponds to the user terminal
  • the correspondence between the AA message and the user terminal is also equivalent to the correspondence between the mobile agent and the user terminal that sent the mobile agent announcement message.
  • the user terminal 1a needs to exchange information with the authentication server (not shown), so that the authentication server verifies whether the identity of the user of the user terminal la is legal or not.
  • the authentication server configures a mobile agent for the user terminal la as the mobile agent corresponding to the user terminal la, for example, the edge router 3b. Therefore, the user terminal la "selects the rule of the mobile agent or the mobile agent assigned by the operator to the user terminal".
  • This information is saved by the DSLAM 2c.
  • the user terminal 1a selects the edge router 3b as the foreign agent of the user terminal la.
  • the DSLAM2c determines whether the mobile terminal corresponds to which mobile agent the user terminal la corresponds to. That is, the edge router 3b serves the user terminal la, which corresponds to the user terminal la, and the BRAS 10 does not serve the user terminal la. Therefore, the DSLAM 2c sends the AA information corresponding to the AA message corresponding to the edge router 3b to the user end. End la.
  • the AA message is a higher priority among multiple AA messages.
  • DSLAM2C stores the load status of multiple superior network management devices of its superiors.
  • the lighter load is the edge router 3b.
  • the DSLAM2C can then send the AA message corresponding to the lighter edge router 3b to one or more user terminals under its jurisdiction.
  • the DSLAM2C selects multiple AA messages, and the AA message with the router address with a smaller network prefix is sent to one or more user terminals under its jurisdiction; or the DSLAM2C selects multiple AA messages with the router address network. The AA message with the larger prefix is sent to one or more user terminals under its jurisdiction.
  • selecting which one or more of the multiple AA messages to send to the user terminal depends on the configuration policy of the network, and the rules are not limited thereto, and here is only an example.
  • a user terminal may receive a mobile agent announcement message from a plurality of edge routers, and the user terminal may select one of the mobile agent announcement messages according to a certain policy, because the invention content of the present invention The relationship is not big and will not be repeated here.
  • each of the above embodiments is described for an IPv4 network, and those skilled in the art can fully understand that the above descriptions for the various embodiments are fully applicable to the IPV 6 network.
  • the difference is that the information exchanged by each module in the IPv4 is a proxy advertisement message and a proxy request message, and in the IPv6 network, corresponding to the IPv4 network, the information exchanged is a router advertisement message and a router request message. See rfc3775 (http://www.ietf.org/rfc/rfc3775.txt) for IPv6 mobility support.
  • IPv6 rfc3775 In IPv6 rfc3775, four options have been modified (new), including: A new flag is added to the route advertisement message format to identify the router that sends the RA message as the home agent on the link; A bit is added to the information option to allow the router to broadcast its global address; in addition, Mobile IPv6 also defines an announcement gap option ( Advertisement interval Option ), used by the router to announce the interval at which it sends unsolicited router advertisement messages; and a new definition of home agent information option to identify the lifetime and preference of the home agent. See the 7.1-7.4 section of rfc3775 for specific regulations.
  • the module used to assist in controlling the mobile agent announcement message is a Mobile Agent Discovery Proxy (MADP) module in the DSLAM, or other modules. In the IPv6 network, it is used to assist in controlling the mobile agent.
  • the module for announcement messages is the Home Agent Advertising Proxy (HAAP) module in the DSLAM, or it can be other modules.
  • HAAP Home Agent Advertising Pr
  • FIG. 3 is a flow diagram of a system method for assisting in controlling mobile agent announcement messages in a DSLAM 2a in accordance with an embodiment of the present invention.
  • the control device 10 shown in FIG. 3 may be a Mobile Agent Discovery Proxy (MADP) module located in the DSLAM 2a, or may be another module located in the DSLAM 2a.
  • MADP Mobile Agent Discovery Proxy
  • the mobile agent advertisement message includes an agent advertisement (AA) message, and the user equipment obtains an AA message by sending an agent solicitation (AS) message; in the IPv6 network, the mobile agent announcement message includes a router.
  • a router advertisement is used by the user equipment to obtain an RA message by sending a router solicitation (RS) message.
  • the acquisition device 100 acquires an AA message from the edge router 3a.
  • the obtaining device 100 can receive the AA message from the edge router 3a, or obtain the AA message pre-stored with the edge router 3a in the device 100. For example, the obtaining device 100 can save the received AA message from the edge router 3a locally.
  • the AA message includes an ICMP Router Advertisement field, which defines ICMP Code, Lifetime, Router Address (es), and router address. Number of (Num Addrs). For specific regulations, see IP Mobility Support for IPv4. Htt : Section 2.1 of www.ietf.org/rfc/rfc3344.txt.
  • the AA message also includes a Mobility Agent Advertisement Extension Field, which defines the Type, Length, Sequence Number, Registration Lifetime, and "R” bits. , "B” bit, "H” bit, “F” bit, “M” bit, “G” bit, “r” bit, “ ⁇ ” bit, “Reserved” field, care-of address ( Care- of-Addresses ). See Section 2.1.1 of IP Mobility Support for IPv4, http://www.ietf.org/rfc/rfc3344.txt for specific specifications.
  • the AA message also includes a prefix length extension (Prefix-Lengths Extension), including type (Type), length (Length), and prefix length (Prefix-Length), where the length is the number of addresses of the ICMP route advertisement part (Num Addrs).
  • Prefix-Lengths Extension including type (Type), length (Length), and prefix length (Prefix-Length), where the length is the number of addresses of the ICMP route advertisement part (Num Addrs
  • Each prefix in the prefix length corresponds to each router address in the ICMP router advertisement domain, and the subnet prefix can be obtained by performing an AND operation with each prefix and the corresponding router address.
  • the AA message sent by the edge router 3a to the DSLAM 2a includes a prefix length extension
  • the AA message sent by the DSLAM 2a to the subordinate network node must also include the prefix length extension; if the edge router 3a sends the AA message to the DSLAM 2a.
  • the prefix length extension is not included, and the prefix length extension is not included in the AA message sent by the BJ DSLAM2a to the subordinate network node.
  • the AA message also includes the upper management device of the DSLAM2a, that is, the IP address and the link layer address of the edge router 3a, that is, the source address of the AA message.
  • the source IP address of the AA message is the IP address 200.15.15.1 of the edge router 3a
  • the source link layer address is the MAC layer address corresponding to the IP address 200.15.15.1, for example, 08:00:20: 0A: 8C: 6D.
  • the destination IP address is the multicast address 224.0.0.1 or the "restricted broadcast" address 255.255.255.255 of "all systems on this link”.
  • the destination link layer address is the MAC address corresponding to the multicast address 224.0.0.1 of "All systems on this link", or the "restricted broadcast” address.
  • MAC address corresponding to 255.255.255.255.
  • the destination address of the AA message is the source address of the AS message sent by the user terminal Id.
  • the user terminal ID is IP address: For example, 200.15.15.8. .
  • DSLAM2a fills the destination IP address with the multicast address 224.0.0.1 or the "restricted broadcast" address of "all systems on this link".
  • the first judging means 101 judges whether or not the first predetermined condition is satisfied.
  • the providing device 102 provides the AA information corresponding to the AA message to one or more user terminals under the jurisdiction of the DSLAM 2a.
  • the steps performed by the first judging device 101 and the providing device 102 are specifically described below for several cases included in the first predetermined condition as follows:
  • the user terminal lc is taken as an example for description.
  • the user terminal lc is located in the link to which the DSLAM 2a is connected, and the user terminal lc has completed registration with the edge router 3a, and therefore, the AA message of the edge router 3a is stored in the DSLAM 2a.
  • the user terminal lc needs to periodically acquire the AA message of the edge router 3a from the DSLAM 2a in order to know whether it is still connected to the link managed by the edge router 3a (ie, it has not moved to the external network). Therefore, the DSLAM 2a periodically transmits the information corresponding to the AA message stored in the DSLAM 2a to the user terminal lc.
  • a transmission scheduled time period timer that periodically transmits information corresponding to each AA message is maintained in the DSLAM 2a.
  • the DSLAM 2a can set the predetermined time period to 50 ms. After the DSLAM 2a sends the information corresponding to the AA message to the user terminal lc last time, the timer is cleared and starts timing. When the timer reaches 50 ms, the first The judging means 101 judges that the first predetermined condition is satisfied. Or the DSLAM 2a resets the timer to 50 ms from the last time the information corresponding to the AA message is sent to the user terminal lc, and starts counting down. When the timer reaches 0, the first determining device 101 determines that the first reservation is satisfied. condition.
  • the scheduled time period is only an example, and the network operator or network administrator should be able to select other predetermined time periods according to actual conditions.
  • the providing device 102 transmits the AA information corresponding to the periodically transmitted AA message to the user terminal lc.
  • the AA information corresponding to the AA message includes: an Internet Control Message Protocol Router Advertisement Domain and a Mobile Agent Advertisement Extension Domain. If the AA message acquired by the obtaining apparatus 100 includes a prefix length extension, the AA message periodically sent by the providing apparatus 102 is provided. The corresponding AA information also includes a prefix length extension. If the AA message acquired by the obtaining apparatus 100 does not include the prefix length extension, the AA information corresponding to the AA message periodically sent by the providing apparatus 102 does not include the prefix length extension.
  • the AA information corresponding to the AA message further includes:
  • DSLAM2a fills in the destination IP address of the AA information into the multicast address of "All systems on this link" 224.0.0.1 or "Restricted broadcast" address 255.255.255.255»
  • Source IP address Since DSLAM2a works in bridge mode, it does not have an IP address for data forwarding. Therefore, DSLAM2a does not modify the source IP address of the AA message, and is still the IP address of the edge router 3a that sends the AA message to DSLAM2a. That is 200.15.15.1.
  • Destination link layer address The MAC address corresponding to the multicast address 224.0.0.1 of "All systems on this link", or the MAC address corresponding to the "Restricted Broadcast" address 255.255.255.255.
  • Source link layer address If DSLAM2a runs the address resolution protocol proxy (ARP address, if the address resolution protocol proxy (ARP Proxy) is not running on DSLAM2a, DSLAM2a fills the source link layer address with the same metropolitan area as DSLAM2a.
  • the MAC address of the mobile agent of the network in this embodiment, is the address of the edge router 3a, that is, the MAC address corresponding to 200.15.15.1.
  • DSLAM2a also needs to set the lifetime of the AA information sent to the user terminal lc to
  • the providing device 102 further needs to determine whether the acquired AA message is marked with The identifier of the virtual local area network (VLAN), if the AA message is marked with the identifier of the VLAN, the providing device 102 sends the generated AA information to multiple user terminals corresponding to the virtual network divided by the VLAN, otherwise, the DSLAM2a The generated AA message is sent through its DSL side port to all user terminals of the physical link or logical link where it is located, including the user terminal lc.
  • VLAN virtual local area network
  • the user terminal Id is taken as an example for description. After the lifetime of the last AA message obtained by the user terminal Id expires, after the AA message from the same edge router is not received, the user terminal Id needs to send an AS message to request the AA message. In this embodiment, when the user terminal Id moves from another subnet (not shown) to the subnet under the DSLAM 2a, it loses contact with the other subnet, and therefore, the user terminal Id sends an AS message. And because the user terminal Id does not know the unicast address of the mobile agent on the subnet link to which it is moving, the destination IP address of the AS message sent is the multicast directed to all mobile agents on the subnet link.
  • the address, that is, 224.0.0.11, the destination link layer address is the MAC address corresponding to the multicast address 224.0.0.1 1 .
  • the source IP address of the A S message sent by the user terminal is the IP address of the user terminal 1 d. For example, 200.15.15.8.
  • the source link layer address is the MAC address of the port of the user terminal Id that sent the message.
  • the user terminal Id dynamically obtains an IP address and needs to send an AS message when the IP address has not been obtained, the source IP address of the AS message cannot be null, and the user terminal ID Fill in the source IP address in the AS message with 0.0.0.0.
  • the judgment result is that the first predetermined condition is satisfied.
  • the description of taking the AS message from the user terminal Id by the DSLAM 2a as an example is as described above.
  • the first determining means 101 receives an AS message from any one of the plurality of user terminals below which it is cascaded, the first judgment The device 101 judges that the first predetermined condition is satisfied.
  • the providing device 102 sends the AA information corresponding to the pre-stored AA message to W User terminal ld requesting the AA message.
  • the AA information corresponding to the AA message includes: an Internet Control Message Protocol Router Advertisement Domain and a Mobile Agent Advertisement Extension Domain. If the AA message acquired by the obtaining apparatus 100 includes a prefix length extension, the AA message corresponding to the ASI message sent by the device is provided. The AA information also includes a prefix length extension. If the prefix length extension is not included in the AA message acquired by the DSLAM2a, the AA information corresponding to the AA message sent by the DSLAM2a does not include the prefix length extension.
  • the AA information corresponding to the AA message further includes:
  • Destination IP address The source address of the AS message sent by the user terminal Id. In this embodiment, it is the IP address of the user terminal Id: for example, 200.15.15.8.
  • DSLAM2a fills in the destination IP address with the multicast address 224.0.0.1 or "restricted broadcast" of the "All systems on this link", address 255.255.255.255.
  • Source IP address Since DSLAM2a works in bridge mode, it does not have an IP address for data forwarding. Therefore, DSLAM2a does not modify the source IP address of the AA message, and is still the IP address of the edge router 3a that sends the AA message to DSLAM2a. That is 200.15.15.1.
  • Destination link layer address When the source IP address of the AS message is known, DSLAM2a fills the destination link layer address with the MAC address corresponding to the source IP address, that is, the MAC address corresponding to 200.15.15.8. When the source IP address of the AS message is 0.0.0.0, the DSLAM2a fills in the destination link layer address with the MAC address corresponding to the multicast address 224.0.0.1 of the "All systems on the link", or the "restricted broadcast" address. MAC address corresponding to 255.255.255.255.
  • Source link layer address If the address resolution protocol proxy (ARP Proxy) is running on DSLAM2a, DSLAM2a modifies the source link layer address to the network side MAC address of DSLAM2a. If the address resolution protocol proxy (ARP Proxy) is not running on DSLAM2a, DSLAM2a The source link layer address is filled with the MAC address of the mobile agent connected to the same metro Ethernet network as the DSLAM 2a. In this embodiment, it is the address of the edge router 3a.
  • ARP Proxy address resolution protocol proxy
  • Case 3 includes at least the following three specific implementations:
  • DSLAM2a does not initially contain any AA messages, then DSLAM2a
  • the AA message is initially configured.
  • the step of the configuration may be manually configured.
  • the network management device configures the AA message in the edge router 3a and the DSLAM 2a at the same time, or the DSLAM 2a obtains the AA message sent from the edge router 3a.
  • the first determining device 101 determines that the message is satisfied. First predetermined condition.
  • the ALAM message from the edge router 3a (hereinafter referred to as a pre-stored AA message) is pre-stored in the DSLAM 2a, and the DSLAM 2a receives the AA message from the edge router 3a (hereinafter referred to as the current AA message). At this time, the DSLAM 2a detects whether the received current AA message is the same as the pre-stored AA message pre-stored in the DSLAM 2a. If the current AA message is different from the pre-stored AA message, the first determining means 101 determines that the first predetermined condition is satisfied.
  • the AA message from the edge router 3a is pre-stored in the DSLAM2a, and the AA message pre-stored by the DSLAM2a is lost in whole or in part, for example, due to a failure or power failure, when the DSLAM2a updates its pre-stored content, that is, When the fault is recovered, or is re-powered to restore the pre-stored AA message in the DSLAM 2a, the first judging means 101 judges that the first predetermined condition is satisfied.
  • the providing device 102 sends the AA information corresponding to the updated AA message to the user terminal lc and/or the content of the AA message and the object to be transmitted is similar to the device in the first scenario, and is not described herein.
  • the DSLAM 2a first updates the pre-stored AA message in the network device with the received current AA message, and the providing device 102 sends the updated pre-stored AA message to the user terminal lc and/or ld, in one
  • the providing device 102 may first send the currently received AA message to the user terminal lc and/or Id, and then the DSLAM 2a then updates the pre-stored AA message in the network device with the currently received AA message.
  • TTL Time To Live
  • control device 10 further comprises a second judging device 103 and a requesting device 104, the requesting device 104 transmitting a second mobile agent to the edge router 3a when the second judging device 103 determines that the second predetermined condition is satisfied Request message, ie AS information corresponding to the AS message.
  • the second predetermined condition includes the following situations:
  • DSLAM2a does not contain any mobile agent announcement messages. For example, when DSLAM2a is initially started, or DSLAM2a fails, all pre-stored AA messages are lost after power-on.
  • the DSLAM2a pre-stores the AA message from the edge router 3a, and the life cycle corresponding to the AA message has expired, or the life cycle of one of the fields is expired.
  • the DSLAM 2a also receives the AS message from the user terminal Id
  • the source IP address included in the AS information sent by the requesting device 104 to the edge router 3a is the user terminal Id.
  • IP address ie 200.15.15.8; if the DSLAM2a does not receive an AS message from any of its user terminals under its jurisdiction, or although it receives an AS message from a user terminal under its jurisdiction, but the user terminal
  • the IP address is unknown because the DSLAM 2a is operating in the bridge mode and does not process the IP address of the data service, so the requesting device 104 fills in the source IP address of the AS information to be sent to the edge router 3a as 0.0.0.0.
  • DSLAM2a fills in the destination IP address as "the multicast address of all mobile agents on the link, 224.0.0.11.
  • DSLAM 2a repeats step S10 to receive the AA message from edge router 3a as a response to the AS message sent by DSLAM 2a.
  • DSLAM2a In addition, in order to prevent broadcast storms caused by loops, when configuring DSLAM2a, DSLAM2a needs to know which ports are uplink ports and which ports are downstream ports. On the uplink port, corresponding to the network side, only the AA message can be received, but the AS message cannot be received. Therefore, the DSLAM2a discards the AS message from the uplink port. On the downlink port, corresponding to the user side, it can only receive AS messages and cannot receive AA messages. Therefore, DSLAM2a discards AA messages from the downlink port.
  • the DSLAM 2a is connected to the edge router 3a through the switch 4a, that is, only one upper-level network management device, that is, the edge router 3a, is cascaded on the DSLAM 2a.
  • the DSLAM can be connected via a switch Multiple edge routers or broadband access servers are connected. Taking DSLAM2C as an example, DSLAM2C is connected to edge router 3b and broadband access server 10 through switch 4b.
  • the obtaining means 100 acquires respective AA messages from the edge router 3b and the broadband access server 10, respectively.
  • the first judging means 101 needs to further judge whether or not the predetermined selection condition is satisfied, in addition to judging whether or not one of the situations 1, 2, and 3 is satisfied.
  • the booking conditions include:
  • the AA message corresponds to the user terminal
  • the correspondence between the AA message and the user terminal is also equivalent to the correspondence between the mobile agent and the user terminal that sent the mobile agent announcement message.
  • the user terminal 1a needs to exchange information with an authentication server (not shown), so that the authentication server verifies whether the identity of the user of the user terminal la is legal. Admit users.
  • the authentication server configures a mobile agent for the user terminal la as the mobile agent corresponding to the user terminal la, for example, the edge router 3b. Therefore, the user terminal la "selects the rule of the mobile agent or the mobile agent assigned by the operator to the user terminal". This information is saved by the DSLAM 2C.
  • the user terminal 1a selects the edge router 3b as the foreign agent of the user terminal la.
  • the DSLAM2c determines whether the mobile terminal corresponds to which mobile agent the user terminal la corresponds to. That is, the edge router 3b serves the user terminal la, which corresponds to the user terminal la, and the BRAS 10 does not serve the user terminal la. Therefore, the providing device 102 sends the AA information corresponding to the AA message corresponding to the edge router 3b to the user terminal la.
  • the AA message is a higher priority among multiple AA messages.
  • DSLAM2C stores the load status of multiple superior network management devices of its upper level.
  • the lighter load is the edge router 3b.
  • the DSLAM 2c can then send the AA message corresponding to the lighter edge router 3b to one or more user terminals under its jurisdiction.
  • the providing device 102 selects a plurality of AA messages, and the AA message with a smaller router prefix network prefix is sent to one or more user terminals under the jurisdiction; or the providing device 102 selects multiple AA messages, Router Address
  • the AA message with a larger network prefix is sent to one or more user terminals under its jurisdiction.
  • selecting which one of the multiple AA messages or which AA messages are sent to the user terminal depends on the configuration policy of the network, and the rules are not limited thereto, and are merely an example here.
  • a user terminal may receive a mobile agent announcement message from a plurality of edge routers, and the user terminal may select one of the mobile agent announcement messages according to a certain policy, because the invention content of the present invention The relationship is not big and will not be repeated here.
  • each of the above embodiments is described for an IPv4 network, and those skilled in the art can fully understand that the foregoing descriptions for the various embodiments are fully applicable to the IPv6 network.
  • the difference is that the information exchanged by each module in the IPv4 is a proxy advertisement message and a proxy request message, and in the IPv6 network, corresponding to the IPv4 network, the information exchanged is a router advertisement message and a router request message. See rfc3775 (http://www.ietf.org/rfc/rfc3775.txt) for IPv6 mobility support.
  • IPv6 rfc3775 In IPv6 rfc3775, four options have been modified (new), including: A new flag is added to the route advertisement message format to identify the router that sends the RA message as the home agent on the link; A bit is added to the information option to allow the router to broadcast its global address.
  • Mobile IPv6 also defines an advertisement interval option for the router to advertise the interval at which it sends unsolicited router advertisement messages.
  • the new definition of home agent information option used to identify the lifetime and priority of the home agent (preference). See the 7.1-7, section 4 of rfc3775 for specific regulations.
  • the module used to assist in controlling the mobile agent announcement message is a Mobile Agent Discovery Proxy (MADP) module in the DSLAM, or other modules. In the IPv6 network, it is used to assist in controlling the mobile agent.
  • the module of the announcement message is the home agent announcement agent (HAAP, Home) in the DSLAM.
  • the Agent Advertising Proxy module can also be other modules.

Abstract

L'invention concerne un procédé de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau d'un réseau de communication. Selon ledit procédé, au moins un message d'annonce d'agent mobile venant d'au moins un équipement de gestion de réseau supérieur est acquis; si la première condition prédéterminée est remplie, le message d'annonce d'agent mobile correspondant à au moins un message parmi ledit (lesdits) message(s) d'annonce d'agent mobile acquis est transmis à au moins un nœud mobile subordonné audit équipement réseau; si la deuxième condition prédéterminée est remplie, l'équipement réseau commande l’envoi d'au moins un message de demande d'annonce d'agent mobile à l'(aux) équipement(s) de gestion de réseau supérieur pour demander des messages d'annonce d'agent mobile. Un dispositif de commande utilisant ledit procédé est également proposé.
PCT/CN2008/001721 2008-10-13 2008-10-13 Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau WO2010043066A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880130523.0A CN102106131B (zh) 2008-10-13 2008-10-13 网络设备中用于辅助控制移动代理公告消息的方法及装置
PCT/CN2008/001721 WO2010043066A1 (fr) 2008-10-13 2008-10-13 Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2008/001721 WO2010043066A1 (fr) 2008-10-13 2008-10-13 Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau

Publications (2)

Publication Number Publication Date
WO2010043066A1 true WO2010043066A1 (fr) 2010-04-22
WO2010043066A8 WO2010043066A8 (fr) 2010-07-15

Family

ID=42106183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001721 WO2010043066A1 (fr) 2008-10-13 2008-10-13 Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau

Country Status (2)

Country Link
CN (1) CN102106131B (fr)
WO (1) WO2010043066A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106789662B (zh) * 2016-01-04 2020-08-14 新华三技术有限公司 一种路由公告方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1685669A (zh) * 2002-10-03 2005-10-19 思科技术公司 无线台站定位无线网络并与无线网络相关联的方法
CN101005508A (zh) * 2006-01-20 2007-07-25 三星电子株式会社 通过接入点发送路由器公告和请求消息的方法和设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100763534B1 (ko) * 2005-06-08 2007-10-05 삼성전자주식회사 ＩＰｖ６ 기반 모바일 시스템에서 빠른 리액티브핸드오버를 수행하는 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1685669A (zh) * 2002-10-03 2005-10-19 思科技术公司 无线台站定位无线网络并与无线网络相关联的方法
CN101005508A (zh) * 2006-01-20 2007-07-25 三星电子株式会社 通过接入点发送路由器公告和请求消息的方法和设备

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
RFC 3344. IP MOBILITY SUPPORT FOR IPV4, 31 August 2002 (2002-08-31) *
RFC 3775. MOBILITY SUPPORT IN IPV6, 30 June 2004 (2004-06-30) *

Also Published As

Publication number Publication date
CN102106131B (zh) 2013-10-16
WO2010043066A8 (fr) 2010-07-15
CN102106131A (zh) 2011-06-22

Similar Documents

Publication Publication Date Title
CN101218796B (zh) 在无线局域网中支持层3漫游的无线交换机负载平衡的方法、系统和装置
JP3616333B2 (ja) パーソナルアクセス通信システム（ｐａｃｓ）のインターネット増補無線ポート制御装置（ｒｐｃｕ）
US20170339600A1 (en) Method and appratus for relocating packet processing functions
KR100800810B1 (ko) 브리지형 휴대 인터넷 시스템 및 그 신호 처리 방법
EP1911312A1 (fr) Moyens et procedes d'amelioration des caracteristiques de transfert de reseaux d'acces sans fil
KR101141646B1 (ko) 이동통신 시스템의 핸드오버 방법
CN101243651A (zh) 为无线局域网（wlan）中的无线客户机分配ip地址并对其进行管理的方法、系统和装置
JP2008530941A (ja) 広帯域無線接続システムでインターネットプロトコル（ｉｐ）住所を再設定する方法
WO2006058206A2 (fr) Procede de deplacement de sous-reseau dans un reseau
WO2007052904A1 (fr) Procede et dispositif pour protocole ip a mobilite rapide avec prefixe d'identification de liaison dans un systeme de communications sans fil
US20130322404A1 (en) Method for handover in wireless communications network comprising a number of sub-networks
EP1451979B1 (fr) Transmission d'un message de mise a jour obligatoire indiquant une adresse d'attention afin de transferer des paquets de donnees a une noeud mobile par l'intermediaire d'une interface unidirectionnelle
WO2008035492A1 (fr) routeur d'accès, serveur dhcp, système d'envoi de publicité de routeur, et son procédé, routeur d'ancrage et programme
KR101503677B1 (ko) 액세스 네트워크에서 멀티캐스트 ｉｐ 패킷들을 제어하기 위한 방법 및 장치
KR101053618B1 (ko) 임시 아이피 주소 재설정 방법
WO2010043066A1 (fr) Procédé et dispositif de commande auxiliaire de messages d'annonce d'agent mobile dans un équipement réseau
Kuntz et al. Multiple mobile routers in nemo: How neighbor discovery can assist default router selection
JP2003309596A (ja) モバイル通信網システム、外部エージェントルータ、アドレスサーバ及びそれらに用いるパケット配送方法
Campos et al. WiFIX+: a multicast solution for 802.11-based wireless mesh networks
Floris et al. Solutions for mobility support in DHCP-based environments
WO2001011904A1 (fr) Attribution d'adresse ip (protocole internet) dans un systeme de communications avec des stations mobiles
Al Rubaye et al. Poster: Address resolution for vehicular communications in heterogeneous environments
WO2009122515A1 (fr) Équipement de terminal de communication mobile et contrôleur de réseau
EP1367772B1 (fr) Branchement d'équipement d' utilisateur à une interface-routeur d' accès selectionnée d'un fournisseur d'accès Internet
Hahn et al. Centralized GW control and IP address management for 3GPP networks

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880130523.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08800673

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08800673

Country of ref document: EP

Kind code of ref document: A1